Home / 813,856.35-1,221,367.73-458,493.15

Finding the Fourth Proportional to 813,856.35, 1,221,367.73 and 458,493.15

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Solution

The fourth proportional to 813,856.35, 1,221,367.73 and 458,493.15 is: 688,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,856.35 : 1,221,367.73 = 458,493.15 : x
  2. Step 2: Convert to fraction form
    813,856.35/1,221,367.73 = 458,493.15/x
  3. Step 3: Cross multiply
    813,856.35x = 1,221,367.73 × 458,493.15
  4. Step 4: Simplify right side
    813,856.35x = 559,988,735,543.58
  5. Step 5: Solve for x
    x = 559,988,735,543.58/813,856.35
  6. Step 6: Final answer
    x = 688,068.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.